/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* fdopendir, dirfd -- C library extension routines
*
* We use lmalloc()/lfree() rather than malloc()/free() in
* order to allow opendir()/readdir()/closedir() to be called
* while holding internal libc locks.
*/
#pragma weak _fdopendir = fdopendir
#include "lint.h"
#include <mtlib.h>
#include <dirent.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "libc.h"
DIR *
fdopendir(int fd)
{
private_DIR *pdirp = lmalloc(sizeof (*pdirp));
DIR *dirp = (DIR *)pdirp;
void *buf = lmalloc(DIRBUF);
int error = 0;
struct stat64 sbuf;
if (pdirp == NULL || buf == NULL)
goto fail;
/*
* POSIX mandated behavior
* close on exec if using file descriptor
*/
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
goto fail;
if (fstat64(fd, &sbuf) < 0)
goto fail;
if ((sbuf.st_mode & S_IFMT) != S_IFDIR) {
error = ENOTDIR;
goto fail;
}
dirp->dd_buf = buf;
dirp->dd_fd = fd;
dirp->dd_loc = 0;
dirp->dd_size = 0;
(void) mutex_init(&pdirp->dd_lock, USYNC_THREAD, NULL);
return (dirp);
fail:
if (pdirp != NULL)
lfree(pdirp, sizeof (*pdirp));
if (buf != NULL)
lfree(buf, DIRBUF);
if (error)
errno = error;
return (NULL);
}
int
dirfd(DIR *dirp)
{
return (dirp->dd_fd);
}